I heard the distinctive and insistant call of a pileated woodpecker, (Dryocopus pileatus) in Dunn Woods today. I am relatively sure that is what I heard, as I pulled out my phone and opened Merlin Bird ID, and listened to the various other calls of other peckers: red-bellied, red-headed, downy and hairy woodpeckers, as well as the flicker. The call of the flicker was the only one that came close to the raucous call of the pileated, a repeated ki-ki-ki-ki-ki-ki-ki-ki. I made the call for pileated woodpecker over the flicker by the habitat. Dunn Woods has quite a few trees that have died since the big winds in 2011 when so many maples were downed. Dead standing trees are a cafeteria for pileated (and other woodpeckers), but flickers prefer to eat in more open habitats, walking on the ground to scare up ants and beetles with their curved beaks.
Pileated woodpeckers have been in Bloomington for many years. Before the property on Curry Pike became Cook Inc, it was a large beech grove, and everyone seemed to know that the woodpeckers nested there. So no one was surprised to see one in town working on an old silver maple. When that property was logged, I think the larger group dispersed around town, but I have no proof.
Over a decade ago I noticed that there were pileated woodpeckers in Winslow Woods park, they have been nesting in the many beech tree cavities in the park. I remember seeing them silhouetted against the sunset while I was working in community garden, and the sound of them calling in mature beech forest that covers that sinkhole rich park.
So it is easy to see why there was one in the woods today. There are quite a few large dead trees that make q buffet of carpenter ants and other insects for the peckers to eat. A lot of trees (a majority of them hard maple) were lost in the decimating winds of 2011. But these trees most likely died from draught stress in the years that followed, and they are still standing and providing food and shelter for the woodpeckers of Dunn woods.